Extracting Design Assets

I am new to Android UI designing. I have designed the screens in photoshop. How to extract the design assets? I tried using layercraft also. It didnt work as excepted by the developer.

He asked to follow the guidelines.

I have created the menu/launcher/ action bar icons. But the developer is the action bar icons are looking like corrupted and it is not even showing the preview in android studio.
Please guide me. What's wrong in the attached image?